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Pharmacopeial Impurities (EP / USP / BP)

Doxazosin EP Impurity B

Reference StandardAvailable on request

Order Doxazosin EP Impurity B (CAS 70918-74-0) online at Zemixal: C13H17ClN2O3, COA and SDS with every lot, worldwide shipping.

Pack sizes
Doxazosin EP Impurity B chemical structure
CAS number70918-74-0
FormulaC13H17ClN2O3
Molar mass284.74 g/mol
Physical formSolid
HS code38229090
InChIKeyTUKBWYXLYINULI-UHFFFAOYSA-N
IUPAC name2,3-dihydro-1,4-benzodioxin-3-yl(piperazin-1-yl)methanone;hydrochloride

About Doxazosin EP Impurity B

Doxazosin EP Impurity B is supplied by Zemixal as a characterised reference material for Doxazosin analysis. Identity at a glance (Reference Standard): CAS 70918-74-0, formula C13H17ClN2O3 and molar mass 284.74 g/mol. It is handled as a solid.

Use cases we see most often

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Storage and safety notes

Classified under GHS with signal word Danger and hazard statements H301, H311, H331 and H411. Read the SDS before first use.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. Every shipment includes a certificate of analysis with characterisation data. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Doxazosin

See every impurity, metabolite and related compound we list for this API.

Doxazosin standards

Typical uses

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Doxazosin EP Impurity B
Product nameDoxazosin EP Impurity B
Catalogue numberZX-021472
CAS number70918-74-0
IUPAC name2,3-dihydro-1,4-benzodioxin-3-yl(piperazin-1-yl)methanone;hydrochloride
Molecular formulaC13H17ClN2O3
Molar mass284.74 g/mol
Exact mass284.0928
GradeReference Standard
Physical formSolid
H-bond donors / acceptors2 / 4
Topological polar surface area50.8 Ų
HS code38229090
InChIKeyTUKBWYXLYINULI-UHFFFAOYSA-N
SMILESC1CN(CCN1)C(=O)C2COC3=CC=CC=C3O2.Cl
PubChem CID2822434
SynonymsDoxazosin EP Impurity B Hydrochloride, Doxazosin Mesylate - Impurity B, 1-(1,4-benzodioxan-2-ylcarbonyl)piperazine hydrochloride, Methanone, (2,3-dihydro-1,4-benzodioxin-2-yl)-1-piperazinyl-, hydrochloride (1:1), 1-(2,3-dihydro-1,4-benzodioxin-2-ylcarbonyl)piperazine hydrochloride, 2-(1-Piperazinylcarbonyl)-1,4-benzodioxane Hydrochloride, N-(1,4-Benzodioxan-2-Carbonyl)Piperazine Hydrochloride, (2,3-Dihydrobenzo[b][1,4]dioxin-2-yl)(piperazin-1-yl)methanone hydrochloride, n-(1,4-benzodioxan-2-carbonyl)-piperazine hydrochloride, (2,3-Dihydrobenzo[1,4]dioxin-2-yl)piperazin-1-yl-methanone hydrochloride, 1-[(2,3-Dihydro-1,4-benzodioxin-2-yl)carbonyl]piperazine Monohydrochloride, 1-[(2RS)-2,3-Dihydro-1,4-benzodioxin-2-ylcarbonyl]piperazine Hydrochloride

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS06 Acute toxicity
Acute toxicity
GHS08 Health hazard
Health hazard
GHS09 Hazardous to the environment
Hazardous to the environment

Signal word Danger

  • H301Toxic if swallowed
  • H311Toxic in contact with skin
  • H331Toxic if inhaled
  • H411Toxic to aquatic life with long lasting effects

Precautionary statements P260, P261, P262, P264, P270, P271, P273, P280, P301 + P316, P302 + P352, P304 + P340, P316, P319, P321, P330, P361 + P364, P391, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Doxazosin EP Impurity B
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Doxazosin EP Impurity B

Which CAS number identifies Doxazosin EP Impurity B?
Doxazosin EP Impurity B is registered under CAS 70918-74-0. You may also see it listed as Doxazosin EP Impurity B Hydrochloride, Doxazosin Mesylate - Impurity B, 1-(1,4-benzodioxan-2-ylcarbonyl)piperazine hydrochloride. Our catalogue number for this item is ZX-021472.
What are the formula and molar mass of Doxazosin EP Impurity B?
For Doxazosin EP Impurity B, its formula is C13H17ClN2O3 and its molar mass is 284.74 g/mol. InChIKey TUKBWYXLYINULI-UHFFFAOYSA-N lets you match it in any structure database.
How is Doxazosin EP Impurity B used in pharmaceutical QC?
Doxazosin EP Impurity B is a characterised reference material linked to Doxazosin. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Doxazosin EP Impurity B?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Doxazosin EP Impurity B?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Doxazosin EP Impurity B to my country?
Yes. Because Doxazosin EP Impurity B is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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